Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings

In this paper, combined effects of piezo-viscous dependency and surface roughness on the squeeze film characteristics of non-Newtonian micropolar fluid in conical bearings are presented. On the basis of Christensen’s theory, two types of one dimensional structure, the longitudinal roughness and tran...

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Autores principales:	Pentyala Srinivasa Rao, Birendra Murmu, Santosh Agarwal
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	viscosity pressure dependency micropolar fluid squeeze film conical bearings load carrying capacity Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e4a9e5cf95044e199d33fd7c03e0a9e7
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spelling	oai:doaj.org-article:e4a9e5cf95044e199d33fd7c03e0a9e72021-11-05T09:19:00ZPiezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings1881-219810.2474/trol.13.282https://doaj.org/article/e4a9e5cf95044e199d33fd7c03e0a9e72018-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/5/13_282/_pdf/-char/enhttps://doaj.org/toc/1881-2198In this paper, combined effects of piezo-viscous dependency and surface roughness on the squeeze film characteristics of non-Newtonian micropolar fluid in conical bearings are presented. On the basis of Christensen’s theory, two types of one dimensional structure, the longitudinal roughness and transverse patterns are considered. The stochastic modified Reynolds equation for these two types of roughness patterns is derived for micropolar fluid by taking into account variation of viscosity with pressure. Through a small perturbation technique, the analytical approximate solution for the mean fluid film pressure, load carrying capacity and squeeze film time is obtained. According to the results, the combined effects of non-Newtonian and viscosity pressure dependency provide an enhancement in the load carrying capacity and lengthen the response time for both types of roughness patterns as compared to the classical iso-viscous Newtonian lubricant case. On the whole, the squeeze film characteristics of conical bearings is improved especially for higher values of coupling parameter and viscosity parameter.Pentyala Srinivasa RaoBirendra MurmuSantosh AgarwalJapanese Society of Tribologistsarticleviscosity pressure dependencymicropolar fluidsqueeze filmconical bearingsload carrying capacityPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 5, Pp 282-289 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	viscosity pressure dependency micropolar fluid squeeze film conical bearings load carrying capacity Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	viscosity pressure dependency micropolar fluid squeeze film conical bearings load carrying capacity Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Pentyala Srinivasa Rao Birendra Murmu Santosh Agarwal Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
description	In this paper, combined effects of piezo-viscous dependency and surface roughness on the squeeze film characteristics of non-Newtonian micropolar fluid in conical bearings are presented. On the basis of Christensen’s theory, two types of one dimensional structure, the longitudinal roughness and transverse patterns are considered. The stochastic modified Reynolds equation for these two types of roughness patterns is derived for micropolar fluid by taking into account variation of viscosity with pressure. Through a small perturbation technique, the analytical approximate solution for the mean fluid film pressure, load carrying capacity and squeeze film time is obtained. According to the results, the combined effects of non-Newtonian and viscosity pressure dependency provide an enhancement in the load carrying capacity and lengthen the response time for both types of roughness patterns as compared to the classical iso-viscous Newtonian lubricant case. On the whole, the squeeze film characteristics of conical bearings is improved especially for higher values of coupling parameter and viscosity parameter.
format	article
author	Pentyala Srinivasa Rao Birendra Murmu Santosh Agarwal
author_facet	Pentyala Srinivasa Rao Birendra Murmu Santosh Agarwal
author_sort	Pentyala Srinivasa Rao
title	Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
title_short	Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
title_full	Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
title_fullStr	Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
title_full_unstemmed	Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings
title_sort	piezo-viscous dependency and surface roughness effects on the squeeze film characteristics of non-newtonian micropolar fluid in conical bearings
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/e4a9e5cf95044e199d33fd7c03e0a9e7
work_keys_str_mv	AT pentyalasrinivasarao piezoviscousdependencyandsurfaceroughnesseffectsonthesqueezefilmcharacteristicsofnonnewtonianmicropolarfluidinconicalbearings AT birendramurmu piezoviscousdependencyandsurfaceroughnesseffectsonthesqueezefilmcharacteristicsofnonnewtonianmicropolarfluidinconicalbearings AT santoshagarwal piezoviscousdependencyandsurfaceroughnesseffectsonthesqueezefilmcharacteristicsofnonnewtonianmicropolarfluidinconicalbearings
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Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings

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